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Finding the Fourth Proportional to 628,737.30, 867,657.54 and 342,259.50

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Solution

The fourth proportional to 628,737.30, 867,657.54 and 342,259.50 is: 472,318.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,737.30 : 867,657.54 = 342,259.50 : x
  2. Step 2: Convert to fraction form
    628,737.30/867,657.54 = 342,259.50/x
  3. Step 3: Cross multiply
    628,737.30x = 867,657.54 × 342,259.50
  4. Step 4: Simplify right side
    628,737.30x = 296,964,035,811.63
  5. Step 5: Solve for x
    x = 296,964,035,811.63/628,737.30
  6. Step 6: Final answer
    x = 472,318.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.